Modbus mapping help

[admin]

Disable RTU1 in Modbus settings, then run this script. It will run for a couple of minutes and will log any found devices.

Code:

require('luamodbus')
mb = luamodbus.rtu()
mb:open('/dev/RS485-1', 9600, 'N', 8, 1, 'H')
mb:connect()

for i = 1, 247 do
  mb:setslave(i)
  res, err = mb:readregisters(0)

  if res ~= nil then
    log('found device', i, res)
  end
end

mb:close()